Specifications: Scanning Mode: wide frequency electronic Convex/ Linear Display Mode: B, B+B, B+M, M, 4B Probe ports : 2 Scanning Angle: changeable Gray Scales: 256 levels Gray Scales Transformation: gamma correction Image rates: 4 display rates, rolling function Image Magnification: 1.0, 1.2, 1.5, 2.0 Monitor: 10 inch display Image Conversion: up and down, left and right, black and white Focusing: variable aperture for section 1,2,3,and 4 available Electronic Focuses: 4 sector dynamic ( Random Combination ) Probe FRE. Support: Convex, Linear, Micro convex, Vaginal, Rectum Resolution: Lateral less than 2mm, Axial less than 1mm Obstetric calculation: BPD, FL, CRL, GS, HC, AD AC, and display fetus age, fetus weight, expected birth date, heart rate, slope ratio, period. Measurement: Distance, Circumference, area, heart rate, EDD, etc. Display: Date, Time, Name, Sex, Age, Hospital, Obstetric list, annotation, edit menu, etc. Video Output: PAL, VGA Size: 350mmX310mmX250 mm Net Weight: 11Kg